This commit was manufactured by cvs2svn to create branch

[bootmanager.git] / source / steps / WriteModprobeConfig.py

diff --git a/source/steps/WriteModprobeConfig.py b/source/steps/WriteModprobeConfig.py
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+#!/usr/bin/python2 -u
+
+# Copyright (c) 2003 Intel Corporation
+# All rights reserved.
+#
+# Copyright (c) 2004-2006 The Trustees of Princeton University
+# All rights reserved.
+
+import os, string
+
+from Exceptions import *
+import utils
+import systeminfo
+import BootAPI
+import ModelOptions
+
+def Run( vars, log, filename = "/etc/modprobe.conf"):
+    """
+    write out the system file /etc/modprobe.conf with the current
+    set of modules.
+
+    returns a tuple of the number of network driver lines and storage
+    driver lines written as (networkcount,storagecount)
+    """
+
+    # write out the modprobe.conf file for the system. make sure
+    # the order of the ethernet devices are listed in the same order
+    # as the boot cd loaded the modules. this is found in /tmp/loadedmodules
+    # ultimately, the order will only match the boot cd order if
+    # the kernel modules have the same name - which should be true for the later
+    # version boot cds because they use the same kernel version.
+    # older boot cds use a 2.4.19 kernel, and its possible some of the network
+    # module names have changed, in which case the system might not boot
+    # if the network modules are activated in a different order that the
+    # boot cd.
+
+    # make sure we have this class loaded
+    
+    try:
+        SYSIMG_PATH= vars["SYSIMG_PATH"]
+        if SYSIMG_PATH == "":
+            raise ValueError, "SYSIMG_PATH"
+
+    except KeyError, var:
+        raise BootManagerException, "Missing variable in vars: %s\n" % var
+    except ValueError, var:
+        raise BootManagerException, "Variable in vars, shouldn't be: %s\n" % var
+
+    sysmods= systeminfo.get_system_modules(vars, log)
+    if sysmods is None:
+        raise BootManagerException, "Unable to get list of system modules."
+        
+    eth_count= 0
+    scsi_count= 0
+
+    modulesconf_file= file("%s/%s" % (SYSIMG_PATH,filename), "w" )
+
+    for type in sysmods:
+        if type == systeminfo.MODULE_CLASS_SCSI:
+            for a_mod in sysmods[type]:
+                if scsi_count == 0:
+                    modulesconf_file.write( "alias scsi_hostadapter %s\n" %
+                                            a_mod )
+                else:
+                    modulesconf_file.write( "alias scsi_hostadapter%d %s\n" %
+                                            (scsi_count,a_mod) )
+                scsi_count= scsi_count + 1
+
+        elif type == systeminfo.MODULE_CLASS_NETWORK:
+            for a_mod in sysmods[type]:
+                modulesconf_file.write( "alias eth%d %s\n" %
+                                        (eth_count,a_mod) )
+                eth_count= eth_count + 1
+
+    modulesconf_file.close()
+    modulesconf_file= None
+
+    # dump the modprobe.conf file to the log (not to screen)
+    log.write( "Contents of new modprobe.conf file:\n" )
+    modulesconf_file= file("%s/%s" % (SYSIMG_PATH,filename), "r" )
+    contents= modulesconf_file.read()
+    log.write( contents + "\n" )
+    modulesconf_file.close()
+    modulesconf_file= None
+    log.write( "End contents of new modprobe.conf file.\n" )
+
+    # before we do the real kexec, check to see if we had any
+    # network drivers written to modprobe.conf. if not, return -1,
+    # which will cause this node to be switched to a debug state.
+    if eth_count == 0:
+        log.write( "\nIt appears we don't have any network drivers. Aborting.\n" )
+        
+        vars['BOOT_STATE']= 'dbg'
+        vars['STATE_CHANGE_NOTIFY']= 1
+        vars['STATE_CHANGE_NOTIFY_MESSAGE']= \
+             notify_messages.MSG_NO_DETECTED_NETWORK
+        raise BootManagerException, \
+              notify_messages.MSG_NO_DETECTED_NETWORK
+
+